This article covers some of the case law http://www.lw.com/upload/pubContent/_pdf/pub4047_1.pdf http://www.lw.com/upload/pubContent/_pdf/pub4047_1.pdf but basic

This article covers some of the case law http://www.lw.com/upload/pubContent/_pdf/pub4047_1.pdf http://www.lw.com/upload/pubContent/_pdf/pub4047_1.pdf but basically at least in the US software licenses as licenses not sales have been upheld. Other countries may differ.